Improvement in sawing-machines



FICE.

GEORGE L WILLCOX, OF HEBRON, CONNECTICUT.

IMPROVEMENT I SAWINGNlACHINES.

Specification forming part of Letters Patent No. 57,612, dated August28, 1866.

To all whom it may concern:

Be it known that l, GEORGE L. WILLcoX, of Hebron, in the county ofTolland and State of Connecticut, have invented a new and usefulImprovement in Crosscut Sawing Ma-4 chines; and I do hereby declare thatthe following is a full and exact description thereof, reference beinghad to the annexed drawings and to the letters of reference markedthereon.

The nature of my invention and improvement will be understood by thefollowing' description.

In the accompanying drawings, Figure l is a side view ofthe machine inconnect-ion with a log to be sawed into lengths. Fig. 2 is an endelevation ofthe same. Fig. 3 is a perspective view of the doubleguide-piece J. Figs. 4, 5, and 6 are a face, edge, and end view of thespur-plate E. Fig. 7 is a face view ofthe double ratchet N.

Like letters in all the ligures indicate the same parts.

A is a frame, to which the several parts of the machine are attached. Bis a gear-wheel on the driving-shaft C; and D, a pinion on the shaft E,which gears into the wheel.

F is a crank on the outer end of the shaft C, for propelling the same. A

At the opposite side of the machine, on the end or" the pinionshai't D,there is a crank-arm, a, which has a wrist-pin, b, on which the upperend of the pitman G works. The lower end ofthe pitman is connected, bymeans of the pin c, with the slide H, to which the upper end of the sawI is rigidly attached in any convenient manner.

In the drawings the saw is represented in a slit in the end of theslide, and secured by means of the screw d. This arrangement providesfor readily detaching the saw for filing and refastening it to theslide. The slide H has a reciprocating motion by means oi` the crank armc, above described, and slides in the vertical guide J, which has alateral movement on the concentric guidestrip K, there being across-mortise, e, as seen in Fig. 3, which moves freely on said stripfrom one side of the machine to the other as the saw advances throughthe log. The guide-strip is fastened to the frame A by means of screws fin the arms g of the strip.

The saw is kept up to the log by means of the spring L, which bearsagainst the edge of the guide-strip J. The upper end of the spring has afree movement on the end of the shaft E, and is kept tight by means ofthe dog h on i one end of the double handle-piece M, the said dogcatching in the teeth of the double ratchet N, which is permanentlysecured to the side ofthe frame A by means of screws. The dog h', on theother end of the piece M, is for the purpose of securing the spring inposition to hold the sa-W away from the log when not in action, the dog7L being then free from the ratchet.

To suitthe 'action of the two dogs It and It', the teeth of theratchet-plate N are made right and left, as more clearly seen in Fig. 7.

The dog-piece M is hung on the pivot t' in the shank j, which projectsupward from the spring L. On the end of the shank there is a handle, O,for placing the spring in position.

P is a wire spring, the upper end oi' which is inserted in the lower endof the handle O and the lower' end in a conical hole, 7c, in theprojection Z of the piece M. By means ot' this spring either dog is heldsecurely in position with the ratchet N, the said projection Zin eithercase being thrown out of perpendicular, as represented in Fig. l.

The operation is as follows: The machine being set on a log, Q, which isto be cut into lengths, the spurs m m on the plate R, which is seen inFig. l, and detached in Figs. 4, 5, and 6, are brought against one sideof the log Q, and the point of the screw-rod S being forced Vinto theother side oi the log by means of the crank T on the outer end ot' therod, the said spurs m m are also embedded in the log, and the machine ismadefast to thelog. Then the spring L is set to press sufciently hardagainst the guide-piece J for the action of the saw I. The saw is thenoperated by turning the crank F by means of the connections therewith,above described. The spring is readj usted through out the operation oi"the saw, as may be required, as the latter advances. When the log issawed through the dog L is disengaged from the ratchet N, and the springL is drawn back by meansof the handle O, the bent wire a, which isconnected to the guide-piece J, keeping up the connection of the, springtherewith. The machine is then ready to be reset on the log for eration,substantially as described, and for the another operation. purposesspecied.

Having thus fully described my improve- In testimony that the above ismy invention ment in crosscut-sawing machines, What I I have hereuntoset my hand and affixed my claim therein as new, and desire to secure byseal this 14th day of June. 1866.

Letters Patent, is- GEORGE L. WILLGOX. [L. S.]

The arrangement of the double dog-piece M, Vitnesses: ratchet N, handleO, and springs L and P with STEPHEN Us'rrcK, the guide-piece J, whenarranged for joint op- JOHN WHITE.

